145505548 has 6 divisors (see below), whose sum is σ = 254634716. Its totient is φ = 72752772.

The previous prime is 145505543. The next prime is 145505609. The reversal of 145505548 is 845505541.

It is not an unprimeable number, because it can be changed into a prime (145505543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18188190 + ... + 18188197.

Almost surely, 2^145505548 is an apocalyptic number.

It is an amenable number.

145505548 is a deficient number, since it is larger than the sum of its proper divisors (109129168).

145505548 is a wasteful number, since it uses less digits than its factorization.

145505548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36376391 (or 36376389 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 37.

The square root of 145505548 is about 12062.5680516215. The cubic root of 145505548 is about 525.9686401521.

The spelling of 145505548 in words is "one hundred forty-five million, five hundred five thousand, five hundred forty-eight".